Simplex 636-820 Category : Simplex This is the Simplex 4010 user interface which was taken out of a broken 4010. Brand SimplexModel 636-820Manufacturer SimplexType Component
Simplex 2098-9806 Category : SimplexThis device is a permanent fixture in my Simplex 4004 wall system.
Grinnell TFX-912P Category : GrinnellJust like the rest of my Grinnell equipment, this smoke detector is from Brigham Young University.
